| /* |
| * Copyright (c) OSGi Alliance (2012, 2014). All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.osgi.framework.hooks.weaving; |
| |
| import org.osgi.annotation.versioning.ConsumerType; |
| |
| /** |
| * Woven Class Listener Service. |
| * |
| * <p> |
| * Bundles registering this service will receive notifications whenever a |
| * {@link WovenClass woven class} completes a {@link WovenClass#getState() |
| * state} transition. Woven Class Listeners are not able to modify the woven |
| * class in contrast with {@link WeavingHook weaving hooks}. |
| * |
| * <p> |
| * Receiving a woven class in the {@link WovenClass#TRANSFORMED TRANSFORMED} |
| * state allows listeners to observe the modified {@link WovenClass#getBytes() |
| * byte codes} before the class has been {@link WovenClass#DEFINED DEFINED} as |
| * well as the additional {@link WovenClass#getDynamicImports() dynamic imports} |
| * before the {@link WovenClass#getBundleWiring() bundle wiring} has been |
| * updated. |
| * |
| * <p> |
| * Woven class listeners are synchronously {@link #modified(WovenClass) called} |
| * when a woven class completes a state transition. The woven class processing |
| * will not proceed until all woven class listeners are done. |
| * |
| * <p> |
| * If the Java runtime environment supports permissions, the caller must have |
| * {@code ServicePermission[WovenClassListener,REGISTER]} in order to register a |
| * listener. |
| * |
| * @ThreadSafe |
| * @since 1.1 |
| * @author $Id: 4a7a69943bffbc53738f050c51d49f11b67a13cb $ |
| */ |
| @ConsumerType |
| public interface WovenClassListener { |
| /** |
| * Receives notification that a {@link WovenClass woven class} has completed |
| * a state transition. |
| * |
| * <p> |
| * The listener will be notified when a woven class has entered the |
| * {@link WovenClass#TRANSFORMED TRANSFORMED}, {@link WovenClass#DEFINED |
| * DEFINED}, {@link WovenClass#TRANSFORMING_FAILED TRANSFORMING_FAILED} and |
| * {@link WovenClass#DEFINE_FAILED DEFINE_FAILED} states. |
| * |
| * <p> |
| * If this method throws any exception, the Framework must log the exception |
| * but otherwise ignore it. |
| * |
| * @param wovenClass The woven class that completed a state transition. |
| */ |
| public void modified(WovenClass wovenClass); |
| } |